Arm barriers are an electromechanical devices used in places such as sites,
workplaces, parking lots, shopping malls in order to control vehicle entrances and to ensure the security of the field. Electromechanical arm barriers are generally controlled by access control systems such as push button, remote controller, card reader and RFID long range readers, etc.

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DC and AC motors are preferred in the trigger mechanisms of electromechanical barriers. In systems with DC motors, dry batteries are used to feed the system against possible power failures, and UPS is used in systems which control by AC motors. Apart from all these issues, the barriers also have a mechanical release mechanism. AC motors used in barriers are of two types; three phases and mono phase.

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Most barrier manufacturers prefer three-phase
asynchronous motors in their systems because of both technical and cost
benefits. It is very important to use AC motor driver (frequency inverter is
another name of the AC motor driver) in AC motors. While motor drivers enable three-phase motors to operate with a single phase, they also reduce the electricity consumption of the system to a minimum. Other important
advantages of motor drivers are the ramp movement of the barrier at the soft start-stop and the adjustment of the barrier speed at the desired value.

Photocell and loop sensors are used for safety in electromechanical
barriers. With these sensors, both pedestrian and vehicle safety is ensured

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